1 files changed, 109 insertions, 0 deletions
diff --git a/dc/label.cpp b/dc/label.cpp
new file mode 100644
index 0000000000..14e331c11e
--- /dev/null
+++ b/dc/label.cpp
@@ -0,0 +1,109 @@
+#include <ronin/ronin.h>
+#include <string.h>
+
+#include "label.h"
+
+static void *get_romfont_address()
+{
+  void *ret;
+  __asm__("jsr @%1; mov #0,r1; mov r0,%0" :
+	  "=r" (ret) : "r" (*(void **)0x8c0000b4) :
+	  "pr", "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7");
+  return ret;
+}
+
+static void draw_char(unsigned short *dst, int mod, int c, void *font_base)
+{
+  unsigned char *src;
+  int i, j;
+  if(c<=32 || c>255 || (c>=127 && c<160)) c=160;
+  if(c<128) c -= 32; else c -= 64;
+  src = c*36 + (unsigned char *)font_base;
+  for(i=0; i<12; i++) {
+    int n = (src[0]<<16)|(src[1]<<8)|src[2];
+    for(j=0; j<12; j++, n<<=1)
+      if(n & (1<<23)) {
+	dst[j] = 0xffff;
+	dst[j+1] = 0xffff;
+	dst[j+2] = 0xa108;
+	dst[j+mod] = 0xa108;
+	dst[j+mod+1] = 0xa108;
+      }
+    dst += mod;
+    for(j=0; j<12; j++, n<<=1)
+      if(n & (1<<23)) {
+	dst[j] = 0xffff;
+	dst[j+1] = 0xffff;
+	dst[j+2] = 0xa108;
+	dst[j+mod] = 0xa108;
+	dst[j+mod+1] = 0xa108;
+      }
+    dst += mod;
+    src += 3;
+  }
+}
+
+void Label::create_texture(const char *text)
+{
+  void *font = get_romfont_address();
+  int l = strlen(text);
+  if(l>64) l=64;
+  int w = 14*l;
+  for(tex_u=TA_POLYMODE2_U_SIZE_8, u=8; u<w; u<<=1, tex_u += 1<<3);
+  int tsz = u*32;
+  unsigned short *tex = (unsigned short *)ta_txalloc(tsz*2);
+  for(int i=0; i<tsz; i++)
+    tex[i] = 0;
+  int p=l*14;
+  while(l>0)
+    draw_char(tex+(p-=14), u, text[--l], font);
+  texture = tex;
+}
+
+void Label::draw(float x, float y, unsigned int argb)
+{
+  struct polygon_list mypoly;
+  struct packed_colour_vertex_list myvertex;
+
+  mypoly.cmd =
+    TA_CMD_POLYGON|TA_CMD_POLYGON_TYPE_TRANSPARENT|TA_CMD_POLYGON_SUBLIST|
+    TA_CMD_POLYGON_STRIPLENGTH_2|TA_CMD_POLYGON_PACKED_COLOUR|TA_CMD_POLYGON_TEXTURED;
+  mypoly.mode1 = TA_POLYMODE1_Z_ALWAYS|TA_POLYMODE1_NO_Z_UPDATE;
+  mypoly.mode2 =
+    TA_POLYMODE2_BLEND_SRC_ALPHA|TA_POLYMODE2_BLEND_DST_INVALPHA|
+    TA_POLYMODE2_FOG_DISABLED|TA_POLYMODE2_ENABLE_ALPHA|
+    TA_POLYMODE2_TEXTURE_MODULATE|TA_POLYMODE2_V_SIZE_32|tex_u;
+  mypoly.texture = TA_TEXTUREMODE_ARGB1555|TA_TEXTUREMODE_NON_TWIDDLED|
+    TA_TEXTUREMODE_ADDRESS(texture);
+
+  mypoly.red = mypoly.green = mypoly.blue = mypoly.alpha = 0;
+
+  ta_commit_list(&mypoly);
+
+  myvertex.cmd = TA_CMD_VERTEX;
+  myvertex.ocolour = 0;
+  myvertex.colour = argb;
+  myvertex.z = 0.5;
+  myvertex.u = 0.0;
+  myvertex.v = 0.0;
+
+  myvertex.x = x;
+  myvertex.y = y;
+  ta_commit_list(&myvertex);
+
+  myvertex.x = x+u;
+  myvertex.u = 1.0;
+  ta_commit_list(&myvertex);
+
+  myvertex.x = x;
+  myvertex.y = y+25.0;
+  myvertex.u = 0.0;
+  myvertex.v = 25.0/32.0;
+  ta_commit_list(&myvertex);
+
+  myvertex.x = x+u;
+  myvertex.u = 1.0;
+  myvertex.cmd |= TA_CMD_VERTEX_EOS;
+  ta_commit_list(&myvertex);  
+}
+